The equipment ______ by the technician before it can be used for the experiment.
A. must be checked
B. must have checked
C. must check
D. must be checking

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Pronouns, Sentence Structure, and Figurative LanguageSports VocabularyOn, At, ByComparison of Adjectives and AdverbsAdverbs of Manner, Likes and PreferencesPast and Past ContinuousToo or EnoughPrepositions & Modal VerbsHas and HaveComparativesOther quiz:
Grammar › ViewCorrect the capitalization in the sentence: the united states of america is a country in north america.
A. The United States of America is a country in North America
B. the united states of america is a country in North America.
C. The United States Of America Is A Country In North America.
D. the united states of america is a country in north america.
Past Tense and Neutral › View
Three-quarters of the cake ________ by John last night.
A. is eaten
B. are eaten
C. was eaten
D. were eaten
Vocabulary Spelling Grammar › ViewFind the correct spelling.
A. retaok
B. redake
C. retak
D. retake
Grammar › View
I’ve walked ten kilometres. My _____ hurt.
A. feet
B. foots
C. footes
